Arthur’s quest for tea leads him to the alien who’s just bought up the entire contents of the shop they were in, and to Rose Tyler, and trouble. Lovely, fun cross, the narrator’s voice very much in-keeping for both worlds.

And: “Get ready, Rose, for the most excruciatingly mind-numbingly dull bit of planet-saving you’ll ever be involved in.”
“What, why? What’re we going to do?”
“How are you at filling in forms?”

This is short and funny, and note-perfect, which for a Hitchhiker cross is surely recommendation enough. In which the invasion of Earth is foiled in typical random manner, and there are lots of lovely, amusing throwaway snippets, and did I say it was voice-perfect?

Another fun cross, with particular credit going to the treatment of Arthur’s search for tea (and this incarnation’s ability to stash cups in his pocket) and Arthur giving the Doctor and K9 the answer to the universe.